I ran into this issue last night, when my Ubuntu 20.04 LTS automatically upgraded itself, it installed a new kernel and I lost control of the system, it would just crash a few minutes after booting. I tried it again today with a fresh Discourse install and as soon as I upgraded the system it started…

The question being is there a way to start the system without having it start Discourse/docker? Running on AWS Lightsail. The only other option is to rebuild the whole system again which is PITA right now given the backup/restore issues I’m facing. EDIT: This is what I found, hit or miss depending …

I had this happen on two EC2 instances as well. They went down at 5AM EDT for a reboot and never came back up.

Per the link this affects people running canonical “cloud kernels” in ubuntu machines. They removed a patch that affects OverlayFS. While Canonical rolls a fix people can try a different kernel version or using Debian / other distro as a workaround.

I was able to interrupt the cycle using a quick SSH about 15 seconds after it starts to disable the docker/container services. Downgraded the kernel to 5.4 and it seems to be working [图片] How to downgrade the kernel on Ubuntu 20.04 to the 5.4 (LTS) version …

[图片] RBoy: I was able to interrupt the cycle using a quick SSH about 15 seconds after it starts to disable the docker/container services. Downgraded the kernel to 5.4 and it seems to be working How to downgrade the kernel on Ubuntu 20.04 to the 5.4 (LTS) version - Tutorials - Ubuntu Community H…

You simply can revert to the previous kernel and the machine is restored. Or update to the current, fixed kernel, which came out on Thursday.

I have written up a tutorial on how to avoid kernel oops! issues like this that crash your server or keep it from coming back up. I put the tutorial on my Discourse site, since that seemed convenient to me. My site has nothing to do with tech, though. So I unlisted the topic but published it to HTM…

Ubuntu 20.04 内核更新与 docker 导致 EC2 和 Lightsail 崩溃

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RBoy (RBoy) 2022 年6 月 9 日 17:28 6

我通过在启动约 15 秒后进行快速 SSH 来中断该循环，以禁用 docker/container 服务。已将内核降级到 5.4，似乎有效

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Kernel 1028 (linux-aws. linux-gcp and linux-azure) breaks docker and therefore Discourse installs Support	2	625	2022 年6 月 10 日
Kernel version upgrade required when manually updating discourse Self-hosting	35	4647	2023 年6 月 8 日
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Ubuntu 20.04 内核更新与 docker 导致 EC2 和 Lightsail 崩溃

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